Indanylidene compounds, a process for their preparation and their use as UV absorbers

ABSTRACT

Compounds of the formula I according to claim 1 are excellently suitable as UV absorbers for use in cosmetic products, in particular sunscreen compositions, daytime care products and hair care products. They are furthermore suitable for protection of products.

This application is a divisional of Ser. No. 08/905,258 filed Aug. 1, 1997 now U.S. Pat. No. 5,965,066.

The invention relates to new indanylidene compounds, a process for their preparation and their use as UV absorbers, for example in cosmetic compositions, in particular in sunscreen compositions, daytime care products and hair care products, and also for improving the stability of industrial products, such as paints, varnishes, plastics, textiles, packaging materials and rubbers, to light.

Depending on their wavelength, UV rays are called UV-A rays (320-400 nm, UV-A-I: 340-400 nm, UV-A-II: 320-340 nm) or UV-B rays (280-320 ni). Quite generally, the damaging effect of UV rays on the human skin increases as the wavelength decreases and the duration of exposure increases.

UV rays can thus cause skin damage, it being possible for the UV-B radiation to cause sunburn (erythema) up to extremely severe skin burns. Very frequent and unprotected irradiation of the skin with sunlight also leads to a loss in elasticity of the skin and to increased formation of wrinkles, and overall to premature ageing of the skin. In extreme cases, pathological skin changes up to skin cancer may occur.

UV-A radiation has the effect of rapid, weak direct pigmentation of the skin. UV-A rays penetrate into the lower layers of the skin and can accelerate the ageing process of the skin there. The shorter wavelength UV-A-II radiation assists the development of sunburn. UV-A radiation can furthermore trigger phototoxic or photoallergic skin reactions. Confirmed relationships between UV-A exposure and an increased risk of skin cancer exist.

Depending on the position of their absorption maxima, UV absorbers for cosmetic and pharmacological preparations are classified into UV-A and UV-B absorbers; if both UV-A and UV-B are absorbed by one UV absorber, a UV-A/B broadband absorber is referred to in this case.

The most diverse compounds have already been proposed as UV absorbers, such as octyltriazone (DE-A 3 206 398), 2-hydroxy-4-methoxybenzophenone (U.S. Pat. No. 3,751,563) and 4-tert-butyl-4'-methoxy-dibenzoylmethane (DE-A 2 945 925). These compounds either do not have the desired broad UV-A and UV-B absorption, or have only a low absorption in this range or are not sufficiently photostable.

The invention is therefore based on the object of providing improved UV-A and UV-B broadband absorbers.

The invention relates to the use of compounds of the formula ##STR1## wherein R' to R⁴, R^(3'), R^(3"), R^(4') and R^(4") independently of one another denote hydrogen, C₁ -C₈ -alkyl or C₅ -C₁₀ -cycloalkyl, with the proviso that two substituents on adjacent C atoms together can also denote an optionally substituted C₁ -C₄ -alkylene group, in particular C₃ -C₄ -alkylene, wherein a methylene group can be replaced by --O--, --S-- or --NH--, and furthermore

independently of one another denote C₁ -C₄ -alkoxy, hydroxyl, carboxyl, carbalkoxy or carbamoyl,

R⁵ to R⁸ independently of one another have the meaning of R¹, R² or sulpho or aminosulphonyl,

X and Y independently of one another denote CN, CO₂ R⁹, CO₂ NR⁹ R¹⁰ or COR⁹, wherein R⁹ and R¹⁰ independently of one another represent hydrogen, C₁ to C₈ -alkyl or C₅ -C₁₀ -cycloalkyl, and furthermore one of the radicals

X or Y can additionally denote a C₁ -C₈ -alkyl radical, a C₅ -C₁₀ -aryl radical, in particular phenyl, or a 5- to 6-membered heteroaryl radical which contains 1 or 2 heteroatoms from the series consisting of N, O and S, or

X and Y, together with the β atom to which they are bonded, denote a 5- to 7-membered ring which contains up to 3 heteroatoms, in particular oxygen and/or nitrogen, it being possible for the ring atoms to be substituted, in particular by exocyclically double-bonded oxygen (keto group), preferably in the adjacent position to the β atom, and

n and m independently of one another denote zero or 1,

as UV absorbers, preferably in sunscreen compositions.

Compounds of the formula ##STR2## wherein R₁, R₂ and R₃ in each case independently of one another can be identical or different and denote a hydrogen atom, halogen atom, hydroxyl group, nitro group, cyano group or monovalent, optionally substituted organic radical and

R₄ denotes a hydrogen atom, halogen atom, nitro group, cyano group or monovalent, optionally substituted organic radical and

R₅ can be identical or different and denotes a halogen atom, hydroxyl group, nitro group, cyano group or monovalent, optionally substituted organic radical,

are known from EP-A 670 298.

The invention therefore also relates to compounds of the formula (I) with the exception of the compounds mentioned in EP-A 670 298.

The invention preferably relates to compounds of the formula (1) wherein

X and Y are not an unsubstituted or substituted phenyl ring if m=n=zero.

The properties of the compounds I can be varied within wide limits by suitable choice of the substituents. This particularly applies both to the position of the absorption maximum (thus, for example, in the case where R⁶ =alkoxy, the maximum lies in the UV-A range, and if R⁵ -R⁸ =H and n, m=0 and R¹ -R⁴ =H, the maximum lies in the UV-B range, and in the case where R⁷ =alkyl, the UV-A and the UV-B range are even covered) and to the water- and oil-solubility (sulphonic acid groups in the aromatic ring promote water-solubility, and in the absence of sulphonic acid groups the compounds I are chiefly oil-soluble).

Preferred compounds are those in which X denotes cyano and Y denotes carbo-C₁ -C₄ -alkoxy. Compounds which are furthermore preferred are those in which R⁶ denotes alkyl or, in particular, alkoxy; they have a high extinction. The preferred compounds I correspond to the formulae ##STR3##

The compounds according to the invention are particularly suitable for use in sunscreen compositions, preferably in cosmetic and pharmaceutical preparations, but also as anti-ageing agents for industrial products. They are distinguished by an excellent stability to light.

The compounds (I) can be prepared by (Knoevenagel) condensation of compounds of the formula ##STR4## wherein R¹ to R⁸ have the abovementioned meanings, with compounds of the formula ##STR5## with the abovementioned meanings for X and Y (cf. Organikum, VEB Deutscher Verlag, Berlin 1986, page 459) and are to be obtained with good to very good yields.

The indanones used for this can be prepared by F.C. reaction of (substituted) acrylic acid esters with (substituted) aromatics or, in the case of hydroxy substituents (R⁵ -R⁸), by Fies rearrangement of corresponding phenol esters.

The UV absorbers of the formula (I) according to the invention have a fortunate combination of desirable properties, in particular

high UV protection at only low use concentrations,

excellent stability to light,

excellent heat stability,

good solubility in solvents for cosmetics and excellent solubility of the crystalline, oil-soluble UV absorbers in liquid, oil-soluble absorbers such as ethyl, isoamyl and isooctyl p-methoxycinnamate, ethylhexyl salicylate, homomenthyl salicylate, menthyl anthranilate, ethylhexyl p-aminobenzoate and ethyl and ethylhexyl 3,3-diphenyl-2-cyanoacrylate, or combinations of liquid, oil-soluble UV absorbers,

compatibility with cosmetic bases,

pH stability,

problem-free processability in cosmetic formulations and stability under use conditions,

compatibility with packaging materials,

no discoloration of textiles, or stains can be washed out without problems,

colourlessness and odour neutrality,

waterproof UV protection.

The compounds according to the invention can be used in cosmetic or pharmaceutical formulations as UV broadband absorbers which prevent passage of UV rays through the film of formulation applied. This is in general the case if the cosmetic or pharmaceutical formulations comprise 0.5 to 15, preferably 1 to 10, in particular 2 to 7% by weight (based on the total weight of the formulation) of the compounds according to the invention.

The formulations comprising the compounds according to the invention can be used for protecting the skin and hair--especially hair already predamaged by permanent waving, colouring and bleaching--against UV irradiation. These cosmetic and pharmaceutical formulations used to protect the skin from UV radiation can be present in the use forms usually used, i.e. as an oil-in-water or water-in-oil emulsion, as a milk or as a lotion or cream, aqueous or aqueous-alcoholic gel or lotion, aerosol, hydrodispersion gel (emulsifier-free) or any other customary cosmetic or pharmaceutical formulation. For protection of the hair against UV rays, formulations as a shampoo, rinse, treatment course, gel, lotion, spray or cream are preferably used.

The cosmetic and pharmaceutical formulations can comprise the constituents usually used in these compositions, such as, for example, emulsifiers, surface-active compounds, lanolin, vaseline, water, triglycerides of fatty acids, polyethylene glycols, fatty alcohols, ethoxylated fatty alcohols, fatty acid esters (for example isopropyl palmitate, isooctyl stearate, diisopropyl adipate and the like), naturally occurring or synthetic oils or waxes, pigments (for example titanium dioxide, zinc oxide, pearlescent pigments, coloured pigments), thickeners (for example hydroxyethylcellulose, bentonite and the like), preservatives, moisturizing agents, vitamins, silicone oils, glycerol, ethyl alcohol and perfume oils.

The compounds according to the invention can be employed in the corresponding formulations individually or as a mixture; they can also be employed in combination with UV absorbers of other classes of substance. Examples of such compounds include

p-aminobenzoic acid

ethyl p-aminobenzoate, ethoxylated (25 mol)

2-ethylhexyl p-dimethylaminobenzoate

ethyl p-aminobenzoate, N-propoxylated (2 mol)

glycerol p-aminobenzoate

homomenthyl salicylate

2-ethylhexyl salicylate

triethanolamine salicylate

4-isopropylbenzyl salicylate

menthyl anthranilate

ethyl diisopropylcinnamate

2-ethylhexyl p-methoxycinnamate

methyl diisopropylcinnamate

isoamyl p-methoxycinnamate

p-methoxycinnamic acid diethanolamine salt

isopropyl p-methoxycinnamate

2-ethylhexyl 2-cyano-3,3-diphenylacrylate

ethyl 2-cyano-3,3'-diphenylacrylate

2-phenylbenzimidazolesulphonic acid and salts

3-(4'-trimethylanmmonium)benzylidene-bornan-2-one methylsulphate

terephthalylidene-dibornanesulphonic acid and salts

4-t-butyl-4'-methoxy-dibenzoylmethane

β-imidazole-4(5)-acrylic acid (urocaninic acid)

2-hydroxy-4-methoxybenzophenone

2-hydroxy-4-methoxybenzophenone-5-sulphonic acid

dihydroxy-4-methoxybenzophenone

2,4-dihydroxybenzophenone

tetrahydroxybenzophenone

2,2'-dihydroxy-4,4'-dimethoxybenzophenone

2-hydroxy-4-n-octoxybenzophenone

2-hydroxy-4-methoxy-4'-methylbenzophenone

3-(4'-sulpho)benzylidene-bornan-2-one and salts

3-(4'-methylbenzylidene)-d,l-camphor

3-benzylidene-d,l-camphor

4-isopropyldibenzoylmethane

2,4,6-trianilino-(p-carbo-2'-ethylhexyl-1'-oxy)-1,3,5-triazine

phenylene-bis-benzimidazyl-tetrasulphonic acid disodium salt

N-[(2 and 4)-[2-(oxoborn-3-ylidene)methyl]benzyl]acrylamide polymer.

Particularly suitable UV absorbers are:

2-ethylhexyl p-methoxycinnamate,

isoamyl p-methoxycinnamate,

2-phenylbenzimidazolesulphonic acid,

3-(4'-methylbenzylidene)-d,l-camphor,

2-ethylhexyl 2-cyano-3,3-diphenylacrylate,

2-ethylhexyl salicylate,

4-tert-butyl-4'-methoxydibenzoylmethane and

phenylene-bis-benzimidazyl-tetrasulphonic acid disodium salt.

Combination of the compounds I with finely divided pigments, such as, for example, titanium dioxide, zinc oxide and iron oxide, in sunscreen and daytime care products with UV protection is also possible.

The compounds according to the invention are also particulary suitable for photostabilization of UV absorbers of low stability to UV light. Photostabilization of the dibenzoylmethane compounds, which are very unstable to light, is particularly successful.

A light-stable UV filter combination for protecting human skin against UV rays in the range of 280-380 nm in cosmetic products is achieved by employing 1 to 5% by weight of, for example, 4-tert-butyl-4'-methoxydibenzoylmethane and at least 1% by weight of the compound according to formula 1, preferably in a ratio of 2-4 parts of the compound according to formula I to 1 part of tert-butylmethoxydibenzoylmethane. The molar ratio should be 1 or higher.

Another light-stable UV filter combination is achieved by employing 1-10% by weight of ethylhexyl or isoamyl p-methoxycinnamate with at least 1% by weight of the compound of the formula 1, preferably in a ratio of 1:1. The molar ratio should be 0.8 or higher.

Combinations of p-methoxycinnamic acid esters and dibenzoylmethane derivatives and compounds of the formula I can be formulated in a light-stable form by employing, for example, 1-5% by weight of 4-tert-butyl-4'-methoxydibenzoylmethane, 1-10% by weight of ethylhexyl or isoamyl p-methoxycinnamate and at least 2% by weight of the compounds of the formula I, preferably in a ratio of 1 part of dibenzoylmethane derivative, 2 parts of p-methoxycinnamic acid ester and 2 parts of the compound of the formula I.

A further, very photostable UV absorber, such as, for example, methylbenzylidene-camphor, 2-ethylhexyl 2-cyano-3,3'-diphenylacrylate or octyltriazone, is further advantageously to be added to this three-component combination.

The compounds according to the invention can furthermore also be combined with UV absorbers which are employed for protection of industrial products. Examples of such UV absorbers are compounds from the series consisting of benzotriazoles, benzophenones, triazines, cinnamic acid esters and oxalanilides.

EXAMPLES Example 1 ##STR6## 32 g (0.2 mol) of 5-methoxy-1-indanone, 20 g (0.2 mol) of methyl cyanoacetate, 17 g of proplonic acid and 2 g of ammonium acetate are mixed and the mixture is heated at 120° C. for 5 hours. After cooling to room temperature, the crude product is recrystallized from methanol. Yield: 60% of theory; E^(1/1) 1268 (λ_(max) 345 nm). Example 2 ##STR7## 3,3,6-Trimethyl-1-indanone and isoamyl cyanoacetate are reacted analogously to Example 1. Yield: 70% of theory; E^(1/1) 566 (λ_(max) 332 nm)/E^(1/1) 551 (λ_(max) 309 nm). Example 3 ##STR8## 3,3,4,6-Tetramethyl-5-methoxy-1-indanone and methyl cyanoacetate are reacted analogously to Example 1. Yield: 70% of theory; E^(1/1) 800 (λ.sub. 338 nm). Example 4 ##STR9## 0.1 mol of the compound from Example 1 is heated at 70 to 80° C. in a mixture of 0.2 mol of acetic anhydride and 0.2 mol of concentrated sulphuric acid for 30 minutes. After cooling to room temperature, isopropanol is added to the reaction mixture and the product which has then precipitated out is filtered off with suction and dried. Yield: 70% of theory; E^(1/1) 800 (λ_(max) 345 nm).

Components used

    ______________________________________                                         Trade name   Chemical name       Supplier                                      ______________________________________                                         Abil 100     Polydimethylsiloxane                                                                               7                                             Antaron V-216                                                                               Vinylpyrrolidone/   18                                                         hexadecene copolymer                                              Arlacel 1689 Sorbitan monooleate/                                                                               4                                                          propylglyceryl 3-ricinoleate                                      Arlacel 165  Glycerol stearate/polyethylene glycol                                                              4                                                          (MW 100) stearate mixture                                         Arlatone 983 S                                                                              Polyethylene glycol (MW 5)                                                                         4                                                          glyceryl stearate                                                 Arlatone G   hardened with 25 mol of                                                                            4                                                          ethylene oxide                                                    Baysilone Fluid PK 20                                                                       Silicone oil        5                                             Betone Gel MIO                                                                              Mineral oil, quatemium-18                                                                          17                                                         hectorite, propylene carbonate                                    Brij 76      Polyethylene glycol (MW 10)                                                                        4                                                          stearyl ether                                                     Carbopol 2984                                                                               Polyacrylic acid    2                                             Carbopol 954 Polyacrylic acid    2                                             Cetiol HE    Polyol-fatty acid ester                                                                            3                                             Cetiol OE    Dicaprylyl ether    3                                             Cetiol SN    Cetyl/stearyl isononanoate                                                                         3                                             Copherol F 1250                                                                             D-α-tocopheryl acetate                                                                       3                                             Cutina CBS   Glycerol stearate, cetyl/stearyl                                                                   3                                                          alcohol, cetyl palmitate,                                                      coconut glycerides                                                Dehymuls PG PH                                                                              Polyglycerol poly-12-hydroxystearate                                                               3                                             Diisopropyl adipate                                                                         Adipic acid diisopropyl ester                                                                      3                                             D-Panthenol  Panthothenyl alcohol                                                                               15                                            EDTA B. liq. Tetrasodiumethylenediamine-                                                                        6                                                          tetraacetate                                                      Eusolex TA   Titanium dioxide    13                                            Eutanol G    2-Octyldodecanol    3                                             Eumulgin B2  Cetyl/stearyl alcohol, etherified with                                                             3                                                          20 mol of ethylene oxide                                          Finsolv TN   Alkylbenzoate       23                                            Genapol LRO liq.                                                                            Polyethylene glycol (MW 5)                                                                         9                                                          glyceryl stearate                                                 Glycerol     1,2,3-Propane triol 3                                             Isopropyl myristate                                                                         Myristic acid isopropyl ester                                                                      3                                             Jojoba oil   Jojoba oil          19                                            Lameform TGI Triglycerol diisostearate                                                                          3                                             Lamepon S    Protein/coconut fatty acid                                                                         3                                                          condensate, potassium salt                                        Lanette O    Cetyl/stearyl alcohol mixture                                                                      3                                             Macadamia nut oil                                                                           Macadamia nut oil   20                                            Myritol 318  Caprylic/capric triglyceride                                                                       3                                             Natrosol 250 HHR                                                                            Hydroxyethylcellulose                                                                              11                                            NEO HELIOPAN ® AV                                                                       Isooctyl p-methoxycinnamate                                                                        1                                             NEO HELIOPAN ® BB                                                                       2-Hydroxy-4-methoxybenzophenone                                                                    1                                             NEO HELIOPAN ®                                                                          Isoamyl p-methoxycinnamate                                                                         1                                             E1000                                                                          NEO HELIOPAN ®                                                                          Phenylbenzimidazolesulphonic acid                                                                  1                                             HYDRO                                                                          NEO HELIOPAN ®                                                                          3-(4-Methylbenzylidene)-d,                                                                         1                                             MBC          1-camphor                                                         NEO HELIOPAN ® OS                                                                       1-Ethylhexyl salicytate                                                                            1                                             NEO HELIOPAN ® 303                                                                      Isooctyl α-phenyl-β-cyano-cinnamate                                                     1                                             Olive oil    Olive oil           21                                            Parsol 1789  Butylmethoxydibenzoylmethane                                                                       12                                            Permulgin 2550                                                                              Wax                 14                                            Permulgin 3220                                                                              Wax                 14                                            Permulen TR 1                                                                               Polyacrylate        2                                             Phenonip     Mixture of p-hydroxybenzoic acid                                                                   8                                                          esters and phenoxyethanol                                         Polymer JR 400                                                                              Polyquaternium-10   21                                            1,2-Propylene glycol                                                                        1,2-Propanediol     6                                             Texapon MG 3 Magnesium lauryl sulphate/disodium                                                                 3                                                          lauryl sulphosuccinate                                            Tocopherol oil                                                                              Soya oil with D-α-tocopherol                                                                 22                                            Uvinul T 150 Isooctyl triazinyl-p-aminobenzoate                                                                 6                                             Veegum Ultra Magnesium aluminium silicate                                                                       10                                            ZINC OXIDE   Zinc oxide          1                                             NEUTRAL H&R                                                                    Zinc stearate                                                                               Zinc stearate       16                                            ______________________________________                                    

Suppliers

    ______________________________________                                         1.     Haarmann & Reimer GmbH., Holzminden                                     2.     B. F. Goodrich Company, Neuss                                           3.     Henkel KGaA, Dusseldorf                                                 4.     ICI Speciality Chemicals, Frankfurt                                     5.     Bayer AG, Leverkusen                                                    6.     BASF, Ludwigshafen                                                      7.     Godschmidt AG, Essen                                                    8.     Nipa Lab. Ltd., Pontypridd, Mid Glam., Wales/GB                         9.     Hoechst AG, Frankfurt                                                   10.    R. T. Vanderbilt Company Inc., Norwalk/USA                              11.    Hercules Inc., Wilmington, Delaware/USA                                 12.    Hoffmann-LaRoche, Basle/CH                                              13.    E. Merck, Darmstadt                                                     14.    Koster Keunen Holland BV, Bladl/NL                                      15.    Akzo Chemie GmbH, Duren                                                 16.    Chemische Werke Barlocher, Munich                                       17.    Rheox Inc., Hightstown, New Jersey/USA                                  18.    ISP Global Technologies Deutschland GmbH, Frechen                       19.    Henry Lamotte, Bremen                                                   20.    Erhard Wagner GmbH, Bremen                                              21.    Nordmann & Rassmann GmbH & Co., Hamburg                                 22.    Richter GmbH, Berlin                                                    23.    Witco Surfactants GmbH, Steinau a.d. Straβe                        ______________________________________                                    

Example 5

Sunscreen lotion (O/W)

    ______________________________________                                         CONSTITUENTS             %                                                     ______________________________________                                         A)     Arlatone 983 S        1.75                                                     Brij 76               1.25                                                     Lanette O             1.15                                                     Myritol 318           5.00                                                     Eutanol G             6.00                                                     Cetiol SN             6.00                                                     Phenonip              0.20                                                     UV absorber according to formula (I)                                                                 3.00                                              B)     Distilled water       46.65                                                    1,2-Propylene glycol  2.00                                                     Phenonip              0.30                                              C)     Distilled water       25.00                                                    Carbopol 2984         0.30                                                     Sodium hydroxide, 10% strength in water                                                              1.00                                              D)     Perfume oil           0.40                                              PREPARATION INSTRUCTIONS:                                                      Part A: Melt at about 80° C.                                            Part B: Heat to about 90° C.,                                           add Part B to Part A with stirring.                                            Part C: Disperse the Carbopol in water without lumps,                          neutralize with sodium hydroxide solution                                      to give a gel, add to Part A/B at about 60° C.                          Stir until room temperature is reached.                                        Part D: Perfume the emulsion at about 30° C.,                           check the pH (6.5 to 7.0).                                                     ______________________________________                                    

Example 6

Sunscreen lotion (O/W)

    ______________________________________                                         CONSTITUENTS             %                                                     ______________________________________                                         A)     Arlatone 983 S        1.75                                                     Brij 76               1.25                                                     Lanette O             1.15                                                     Myritol 318           15.00                                                    Cetiol SN             15.00                                                    Phenonip              0.20                                                     UV absorber according to formula (I)                                                                 5.00                                              B)     Distilled water       31.65                                                    1,2-Propylene glycol  2.00                                                     Phenonip              0.30                                              C)     Distilled water       25.00                                                    Carbopol 2984         0.30                                                     Sodium hydroxide, 10% strength in water                                                              1.00                                              D)     Perfume oil           0.40                                              ______________________________________                                         PREPARATION INSTRUCTIONS:                                                      Part A: Melt at about 80° C.                                            Part B: Heat to about 90° C.,                                           add Part B to Part A with stirring.                                            Part C: Disperse the Carbopol in water without lumps,                          neutralize with sodium hydroxide solution                                      to give a gel, add to Part A/B at about 60° C.                          Stir until room temperature is reached.                                        Part D: Perfume the emulsion at about 30° C.,                           check the pH (6.5 to 7.0).                                                     ______________________________________                                    

Determination of the in-vitro light protection factor in accordance with the method of Diffey and Robson ("A new substrate to measure sunscreen protection factors throughout the ultra violet spectrum", J. Soc. Cosm. Chem. 40 (3), 123-133 (1989)) gave a value of 11.0.

Example 7

Sunscreen milk (W/O)

    ______________________________________                                         CONSTITUENTS           %                                                       ______________________________________                                         A)     Dehymuls PG PH      5.00                                                       Permulgin 3220      0.50                                                       Zinc stearate       0.50                                                       Myritol 318         15.00                                                      Cetiol SN           15.00                                                      UV absorber according to formula (I)                                                               5.00                                                B)     Distilled water     52.50                                                      Glycerol 86%        5.00                                                       Magnesium sulphate 7 H.sub.2 O                                                                     0.50                                                       Phenonip            0.50                                                C)     Perfume oil         0.50                                                PREPARATION INSTRUCTIONS:                                                      Part A: Melt carefully at about 90° C.                                  Part B: Heat to about 95° C.,                                           then add Part B to Part A with stirring.                                       Stir until room temperature is reached.                                        Part C: Add Part C at 30° C. and then homogenize                        ______________________________________                                          Determination of the invitro light protection factor in accordance with        the method of Diffey and Robson ("A new substrate to measure sunscreen         protection factors throughout the ultra violet spectrum", J. Soc. Cosm.        Chem. 40 (3), 123-133 (1989)) gave a value of 11.9.                      

Example 8

Sunscreen lotion (O/W)

    ______________________________________                                         CONSTITUENTS           %                                                       ______________________________________                                         A)     Ariatone 983 S      1.75                                                       Brij 76             1.25                                                       Lanette O           1.15                                                       Myritol 318         15.00                                                      Cetiol SN           15.00                                                      Finsolv TN          5.00                                                       Phenonip            0.20                                                       UV absorber according to formula (I)                                                               4.00                                                       Parsol 1789         1.50                                                B)     Distilled water     26.15                                                      1,2-Propylene glycol                                                                               2.00                                                       Phenonip            0.30                                                C)     Distilled water     25.00                                                      Carbopol 2984       0.30                                                       Sodium hydroxide,   1.00                                                       10% strength in water                                                   D)     Perfume oil         0.40                                                PREPARATION INSTRUCTIONS:                                                      Part A: Melt at about 80° C.                                            Part B: Heat to about 90° C.,                                           add Part B to Part A with stirring.                                            Part C: Disperse the Carbopol in water without lumps,                          neutralize with sodium hydroxide solution                                      to give a gel, add to Part A/B at about 60° C.                          Stir until room temperature is reached.                                        Part D: Perfume the emulsion at about 30° C.,                           check the pH (6.5 to 7.0).                                                     ______________________________________                                    

Example 9

Sunscreen lotion (O/W)

    ______________________________________                                         CONSTITUENTS             %                                                     ______________________________________                                         A)     Ariatone 983 S        1.75                                                     Brij 76               1.25                                                     Lanette O             1.15                                                     Myritol 318           12.00                                                    Cetiol SN             12.00                                                    UV absorber according to formula (I)                                                                 7.00                                                     NEO HELIOPAN ® E 1000                                                                            7.00                                                     Phenonip              0.20                                              B)     Distilled water       28.65                                                    1,2-Propylene glycol  2.00                                                     Phenonip              0.30                                              C)     Distilled water       25.00                                                    Carbopol 2984         0.30                                                     Sodium hydroxide. 10% strength in water                                                              1.00                                              D)     Perfume oil           0.40                                              PREPARATION INSTRUCTIONS:                                                      Part A: Melt at about 80° C.                                            Part B: Heat to about 90° C.,                                           add Part B to Part A with stirring.                                            Part C: Disperse the Carbopol in water without lumps,                          neutralize with sodium hydroxide solution to                                   give a gel, add to Part A/B at about 60° C.                             Stir until room, temperature is reached.                                       Part D: Perfume the emulsion at about 30° C.,                           check the pH (6.5 to 7.0).                                                     ______________________________________                                    

Example 10

Sunscreen lotion (O/W)

    ______________________________________                                         CONSTITUENTS             %                                                     ______________________________________                                         A)     Arlacel 165           3.00                                                     Eumulgin B 2          1.00                                                     Lanette               1.00                                                     Myritol 318           4.00                                                     Cetiol OE             2.00                                                     Abil 100              1.00                                                     Bentone Gel MIO       3.00                                                     Cutina CBS            1.00                                                     Phenonip              0.20                                                     NEO HELIOPAN ® OS 3.00                                                     (octyl salicylate)                                                             NEO HELIOPAN ® AV 5.00                                                     (octyl methoxycinnamate)                                                       NEO HELIOPAN ® E 1000                                                                            5.00                                                     (isoamyl p-methoxy-cinnamate)                                                  NEO HELIOPAN ® MBC                                                                               1.00                                                     (4-methylbenzylidenecamphor)                                                   Eusolex TA            3.00                                                     UV absorber according to formula (I)                                                                 3.00                                              B)     Distilled water       45.60                                                    Glycerol. 86% strength                                                                               3.00                                                     Phenonip              0.30                                                     Veegum Ultra          1.00                                                     Natrosol 250 HHR      0.30                                                     NEO HELIOPAN ® HYDRO,                                                                            13.30                                                    employed as a 15% strength solution                                            after neutralization with sodium hydroxide                                     (phenylbenzimidazolesulphonic acid),                                           corresponds to active substance: 2.0%                                   C)     Perfume oil           0.30                                              PREPARATION INSTRUCTIONS:                                                      Part A: Melt at about 80° C.,                                           then disperse the Eusolex TA carefully.                                        Part B: Heat to about 90° C. without the Veegum                         and Natrosol, then disperse the Veegum                                         and Natrosol, add Part B to Part A with                                        stirring. Stir until room temperature is reached.                              Part C: Add Part C at 30° C. and then homogenize.                       Check the pH (7.0-7.5).                                                        ______________________________________                                    

Example 11

Sunscreen lotion (W/O)

    ______________________________________                                         CONSTITUENTS             %                                                     ______________________________________                                         A)    Arlacel 1689           3.50                                                    Finsolv TN             6.00                                                    NEO HELIOPAN ® E 1000                                                                             7.00                                                    (isoamyl p-methoxy-cinnamate)                                                  Uvinul T 150 (octyltriazone)                                                                          1.00                                                    UV absorber according to formula (I)                                                                  3.00                                                    Copherol F 1250        2.00                                                    Permulgin 2550         1.00                                                    Myritol 318            6.00                                                    Cetiol SN              6.00                                                    ZINC OXIDE NEUTRAL H&R (zinc oxide)                                                                   7.00                                              B)    Distilled water        51.70                                                   Glycerol 86%           5.00                                                    Phenonip               0.50                                              C)    Perfume oil            0.30                                              PREPARATION INSTRUCTIONS:                                                      Part A: Melt carefully at about 90° C.                                  (without ZINC OXIDE NEUTRAL H&R).                                              Then disperse ZINC OXIDE NEUTRAL                                               H&R carefully.                                                                 Part B: Heat to about 95° C.,                                           then add Part B to Part A with stirring.                                       Stir until room temperature is reached.                                        Part C: Add Part C at 30° C. and then homogenize.                       ______________________________________                                    

Example 12

Sunscreen oil

    ______________________________________                                         CONSTITUENTS           %                                                       ______________________________________                                         A)     NEO HELIOPAN ® E 1000                                                                          7.50                                                       (isoamyl p-methoxy-cinnamate                                                   NEO HELIOPAN ® OS                                                                              5.00                                                       (octyl salicylate)                                                             UV absorber according to formula (I)                                                               3.00                                                       Myritol 318         34.70                                                      Diisopropyl adipate 5.00                                                       Olive oil           1.00                                                       Jojoba oil          1.00                                                       Macadamia nut oil   1.00                                                       Tocopherol oil      1.00                                                       Isopropyl myristate 35.00                                                      Antaron V-216       5.00                                                       Phenonip            0.50                                                       Perfume oil         0.30                                                PREPARATION INSTRUCTIONS:                                                      Mix all the constituents carefully.                                            ______________________________________                                    

Example 13

Sunscreen cream gel

    ______________________________________                                         CONSTITUENTS            %                                                      ______________________________________                                         A)     Distilled water      75.35                                                     Phenonip             0.50                                                      EDTA B liquid        0.10                                               B)     NEO HELIOPAN ® AV                                                                               7.00                                                      (octyl methoxycinnamate)                                                       NEO HELIOPAN ® 303 (octocrylene)                                                                3.00                                                      NEO HELIOPAN ® MBC                                                                              1.00                                                      (4-methylbenzylidene-camphor)                                                  UV absorber according to formula (I)                                                                3.00                                                      Cetiol SN            5.00                                                      Eutanol G            3.00                                                      Lameform TG I        1.00                                                      Perfume oil          0.30                                                      Permulen TR-l        0.25                                                      Carbopol 954         0.05                                               C)     Triethanolamine      0.45                                               PREPARATION INSTRUCTIONS:                                                      Part A: Dissolve the contents in water.                                        Part B: Mix all the constituents                                               (without the Permulen and Carbopol).                                           Dissolve the NEO HELIOPAN ® MBC                                            and the UV absorber according to                                               formula (I) with gentle heating.                                               Disperse the Carbopol and Permulen.                                            Then add Part B to Part A and stir                                             intensively for 45 minutes.                                                    Part C: Add the triethanolamine to Part A/B,                                   with stirring. Continue to stir                                                until the product is homogeneous.                                              Check the pH (about 7.0).                                                      ______________________________________                                    

Example 14

Hair shampoo

    ______________________________________                                         CONSTITUENTS             %                                                     ______________________________________                                         A)     Genapol LRO liquid    18.00                                                    Texapon MG3           36.00                                                    Lamepon S             6.00                                                     Perfume oil           0.60                                                     Phenonip              0.50                                                     Arlatone G            2.00                                                     UV absorber according to formula (I)                                                                 0.50                                                     NEO HELIOPAN ® E 1000                                                                            1.00                                                     (isoamyl p-methoxycinnamate)                                            B)     Distilled water.      33.00                                                    Polymer JR 400        0.20                                                     D-Panthenol           1.00                                                     Sodium chloride       1.00                                                     Sodium hydroxide 10% strength in water                                                               0.20                                              PREPARATION INSTRUCTIONS:                                                      Part A: Dissolve the UV absorber in the                                        NEO HELIOPAN ® E 1000 and                                                  Phenonip with gentle heating,                                                  then add the Arlatone G and                                                    perfume oil and mix thoroughly.                                                Weigh in the remaining constituents.                                           Part B: Dissolve the polymer in the water,                                     with stirring, add the remaining                                               constituents and dissolve.                                                     Add Part B to Part A and stir                                                  (check the pH, about 5.5).                                                     ______________________________________                                     

What is claimed is:
 1. Compounds of the formula ##STR10## wherein R¹ to R⁴, R^(3'), R^(3"), R^(4') and R^(4") independently of one another denote hydrogen, C₁ -C₈ -alkyl or C₅ -C₁₀ -cycloalkyl, with the proviso that two substituents on adjacent C atoms together can also denote an optionally substituted C₁ -C₄ -alkylene group, in which a methylene group may be replaced by --O--, --S-- or --NH--, and furthermore independently of one another denote C₁ -C₄ -alkoxy, hydroxyl, carboxyl, carbalkoxy or carbamoyl,R⁵ to R⁸ independently of one another have the meaning of R¹, R² or sulpho or aminosulphonyl, X and Y independently of one another denote CN, CO₂ R⁹, CO₂ NR⁹ R¹⁰ or COR⁹, wherein R⁹ and R¹⁰ independently of one another represent hydrogen, C₁ to C₈ -alkyl or C₅ -C₁₀ -cycloalkyl, and furthermore one of the radicals X or Y can additionally denote a C₁ -C₈ -alkyl radical, a C₅ -C₁₀ -aryl radical, or a 5- to 6-membered heteroaryl radical which contains 1 or 2 heteroatoms selected from the group consisting of N, O and S, or X and Y, together with the β atom to which they are bonded, denote a 5- to 7-membered ring which contains up to 3 heteroatoms selected from the group consisting of oxygen and nitrogen, substituted by exocyclically double-bonded oxygen (keto group) and n and m independently of one another denote zero or 1, with the exception of compounds of the formula ##STR11## wherein R₁, R₂ and R₃ in each case independently of one another can be identical or different and denote a hydrogen atom, halogen atom, hydroxyl group, nitro group, cyano group or monovalent, optionally substituted organic radical and R₄ denotes hydrogen, a halogen atom, nitro group, cyano group or monovalent, optionally substituted organic radical and R₅ can be identical or different and denotes a halogen atom, hydroxyl group, nitro group, cyano group or monovalent, optionally substituted organic radical and with the exception of ##STR12##
 2. Process for the preparation of the compounds according to claim 1, which comprises condensing compounds of the formula with compounds of the formula ##STR13## 